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Severe Thunderstorms With Heavy Rain Possible In The Upper Midwest; Excessive Heat For Central U.S.

Several rounds of strong to severe thunderstorms will be possible from the northern Plains and upper Midwest to the Great Lakes through Friday. Damaging winds, large hail, and flooding will be the primary threats with these storms. Excessive heat will grip the central Plains with heat indices approaching 105 to 110 degrees. Very hot and humid conditions are likely to expand into the Mid Atlantic. Read More >

Current conditions at

Groton / New London, Groton / New London Airport (KGON)

Lat: 41.33°NLon: 72.05°WElev: 10ft.

Fair

74°F

23°C

Humidity 85%
Wind Speed S 3 mph
Barometer 29.83 in (1010.0 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 21 Jul 8:56 pm EDT
Extended Forecast for

Groton CT

  • Tonight

    Tonight: Mostly clear, with a low around 68. Southwest wind 5 to 8 mph becoming northwest after midnight.

    Mostly Clear

    Low: 68 °F

  • Saturday

    Saturday: Sunny, with a high near 86. Northwest wind 6 to 8 mph becoming southwest in the afternoon.

    Sunny

    High: 86 °F

  • Saturday
    Night

    Saturday Night: A 40 percent chance of showers and thunderstorms. Some of the storms could produce gusty winds and heavy rain.  Increasing clouds, with a low around 69. South wind 6 to 9 mph becoming north after midnight.

    Heavy Rain

    Low: 69 °F

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms before 1pm.  Cloudy, then gradually becoming mostly sunny, with a high near 75. Northeast wind around 11 mph.

    Chance
    T-storms

    High: 75 °F

  • Sunday
    Night

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly after midnight.  Mostly cloudy, with a low around 62. East wind 9 to 11 mph.

    Chance
    T-storms

    Low: 62 °F

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms.  Cloudy, with a high near 74.

    Chance
    T-storms

    High: 74 °F

  • Monday
    Night

    Monday Night: A 40 percent chance of showers and thunderstorms.  Cloudy, with a low around 67.

    Chance
    T-storms

    Low: 67 °F

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms before noon.  Partly sunny, with a high near 75.

    Chance
    T-storms then
    Mostly Sunny

    High: 75 °F

  • Tuesday
    Night

    Tuesday Night: Mostly clear, with a low around 61.

    Mostly Clear

    Low: 61 °F

Detailed Forecast

Tonight
Mostly clear, with a low around 68. Southwest wind 5 to 8 mph becoming northwest after midnight.
Saturday
Sunny, with a high near 86. Northwest wind 6 to 8 mph becoming southwest in the afternoon.
Saturday Night
A 40 percent chance of showers and thunderstorms. Some of the storms could produce gusty winds and heavy rain. Increasing clouds, with a low around 69. South wind 6 to 9 mph becoming north after midnight.
Sunday
A 30 percent chance of showers and thunderstorms before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 75. Northeast wind around 11 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly after midnight. Mostly cloudy, with a low around 62. East wind 9 to 11 mph.
Monday
A 50 percent chance of showers and thunderstorms. Cloudy, with a high near 74.
Monday Night
A 40 percent chance of showers and thunderstorms. Cloudy, with a low around 67.
Tuesday
A 30 percent chance of showers and thunderstorms before noon. Partly sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 61.
Wednesday
Sunny, with a high near 75.
Wednesday Night
Partly cloudy, with a low around 64.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 73.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 79.
Click Map For Forecast
Point Forecast:
Groton CT
 41.32°N 72.09°W (Elev. 3 ft)
9:16 pm EDT Jul 21, 2017
9pm EDT Jul 21, 2017-6pm EDT Jul 28, 2017
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database